testpackage83 (npm) · Malicious Code
Affects testpackage83Source GCVE Database
Malicious package : remove testpackage83 and rotate any secrets on hosts that installed it.
Data as of 14 Nov 2026, 21:54 UTC
Malicious package
Published to npm · OSV MAL-2026-19938
What to do
Remove testpackage83 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmtestpackage83 | Affected
| Fixed in– |
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Description
The npm package 'testpackage83' version 1.0.0 contains malicious code that downloads and executes an untrusted binary from an unverified HTTP source during installation and runtime. This binary is fetched from a suspicious IPv4 address and masquerades as a patched Chromium executable. The package executes this binary via puppeteer-core, potentially allowing arbitrary code execution on the user's machine.